Entries must be produced, recorded, mixed and mastered with the latest version of Propellerhead Reason or Reason Essentials, and must use at least one instance of Buffre Beat Repeater processing an element in the track. Entries may use the trial version of Buffre, and no rack extension purchase is required. Songs must be original: covers and remixes of copyrighted material are not acceptable. Entries must not infringe on any intellectual property rights: proof of sample clearance required. Entries must adhere to all end-user license agreements of the tools used for production